
Product nameOfferings Include: Industrial oxygen, Standard Oxygen, Pure oxygen, High Purity Oxygen, and Ultra Pure Oxygen, with focus on O2.
Oxygen relative Molecular Mass: 31.9998 (calculated by the esteemed 2005 international relative atomic mass standards)
Oxygen is a chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and a potent oxidizing agent that readily forms oxides with most elements as well as with other compounds. |
CAS No.: 7782-44-7 |
EINECS No.: 231-956-9 |
UN No.: UN1072 Compressed gas/UN1073 Liquid oxygen |
Purity: 99.99%-99.999% |
Dot Class: 2.2 Non-flammable gas |
Appearance: Colorless, odorless gas |
Grade Standard: Food Grade, Industrial Grade, Medical Grade |
Technical Standards for Various Grades of Oxygen: Ensuring Pure Oxygen, High Purity Oxygen, and Ultra-Pure Oxygen meet the rigorous quality standards.
Project | Index | ||
pure oxygen | high purity oxygen | ultra-pure oxygen | |
Oxygen (O2) purity (volume fraction)/10-2 ≥ | 99.995 | 99.999 | 99.9999 |
Hydrogen(H2)purity(volume fraction)/10-2 ≤ | 1 | 0.5 | 0.1 |
Argon (Ar)purity(volume fraction)/10-6 ≤ | 10 | 2 | 0.2 |
Nitrogen (N2)purity(volume fraction)/10-6 ≤ | 20 | 5 | 0.1 |
Carbon dioxide (CO2)purity(volume fraction)/10-6 ≤ | 1 | 0.5 | 0.1 |
Total hydrocarbon content (volume fraction)/10-6 ≤ | 2 | 0.5 | 0.1 |
Water (H20) content (volume fraction)/10-6 ≤ | 3 | 2 | 0.5 |
Serial number | product | State | Container (L or m³) | Working pressure (MPa) | Container height (excluding bottle valve and bottle cap) mm | Empty weight of container (excluding valve and cap) kg | Filling volume (pressure or weight) MPa or kg | Supply mode |
1 | Oxygen | Gaseous | 4L(Φ140) | 15MPa | 395 | 7.1 | 10-15MPa | Supplied in steel or aluminum alloy cylinders |
2 | Gaseous | 8L(Φ140) | 15MPa | 680 | 11.5 | 10-15MPa | ||
3 | Gaseous | 10L(Φ159) | 15MPa | 671 | 13.5 | 10-15MPa | ||
4 | Gaseous | 15L(Φ159) | 15MPa | 956 | 19 | 10-15MPa | ||
5 | Gaseous | 20L(Φ219) | 15MPa | 715 | 23 | 10-15MPa | ||
6 | Gaseous | 40L(Φ219) | 15MPa | 1315 | 48 | 10-15MPa | ||
7 | Gaseous | 50L(Φ219) | 20MPa | 1315 | 48 | 10-15MPa | ||
8 | Liquid Oxygen | Liquid | Customization | -- | -- | -- | -- | Supplied in cryogenic containers |
9 | Remark | Due to differences in container design pressure, the above data may differ slightly. Please contact us for more details, . |


Explore the vibrant spectrum of gas cylinders, available in various colors that can be customized to meet your specific needs.



Begin with billet sawing and cutting, followed by induction heating. Next, reverse extrusion punching and drawing techniques are employed to form the structure. Proceed with edge trimming and closing, then refine strength and durability through heat treatment. For a pristine exterior, apply external sandblasting. Mouth thread processing ensures compatibility, and internal sandblasting or phosphating optimizes the interior. Rigorous water pressure testing guarantees integrity, and precise valve installation is followed by an air tightness check. A sleek finish is achieved with plastic spraying and drying. Finally, conduct a thorough inspection before storage, ensuring each cylinder is ready for use.
2, Steel Pipe Spinning Method:
Begin with sawing and cutting the steel pipe, then apply induction heating for malleability. Spinning bottom sealing is next, followed by milling the inner bottom. Another round of induction heating prepares for spinning end closing. Heat treatment solidifies the structure, and sandblasting perfects the appearance. Mouth thread processing is meticulously done, and internal sandblasting or phosphating enhances the pipe's interior. Water pressure testing ensures robustness, followed by precise valve installation. An airtightness test is crucial before the sleek plastic spraying and drying finish. A final inspection ensures impeccable quality before storage.
Carefully crafted wooden pallets are used, ensuring secure transportation and stability during transit, while bulk loading maximizes efficiency and reduces handling time. Durable and protective cartons are employed to safeguard contents, offering a reliable solution for smaller shipments.
Qingdao Sains Gas Technology Co., Ltd. stands as a distinguished leader in the realm of professional gas manufacturing, offering an extensive array of gases to meet diverse industrial needs. Leveraging our rich experience and unparalleled technological innovation, we cater to a broad spectrum of industries such as steel, chemicals, electronics, automobiles, construction, shipbuilding, food and beverages, and medical care. Our steadfast dedication ensures that we deliver unmatched solutions across these sectors, empowering them with the resources they need to thrive. Our unwavering focus remains on pioneering advanced gas application solutions, setting new benchmarks for excellence.

High Quality with Reasonable Competitive Price |
We manufacture with strict and complete quality control system, and all products are strictly inspected before shipment. Besides, we use advanced technique to reduce any possible cost without lowing quality standard to provide our customers competitive price. |
Fast Delivery Time |
Annual Output of 800,000 pcs and near Qingdao seaport which is one of the biggest seaport of China. |
Excellent Professional Service(24 hours Service Support) |
We are always good at providing solutions and services to be your trustworthy partner. |
OEM/ODM ACCEPTED |
Color, Valve, Cap,Handle, Marks etc. |
Q1: What is the capacity range of this gas cylinder?
A1: Weoffer a versatile range of capacities from 0.8liters to 80 liters, catering to diverse requirements.
Q2: How long is the delivery time for this gas cylinder?
A2: The delivery time for a 40-liter gas cylinder is approximately 15 days after the deposit is received.
Other specifications require negotiation, usually taking about 20-30 days based on the production schedule.
Q3: What payment methods are accepted?
A3: We accept TT payments,L/C, Western Union, PayPal, or any other convenient methods.
Q4: What types of certifications do you provide?
A4: We are pleased to offer TPED, CE, and TUV certifications to our clients.